/* Problem 1 (required 50 points)

Write a function int nonZero(int A[], int size) that 
counts the number of non-zero elements of the array A. 
Write a program to test your function on random array 
of integers, each integer in range -2 to 2 and size in range 5 to 20.*/
#include<stdio.h>
#include<stdlib.h>
#include<time.h>
#define SIZE 20
int nonZero(int A[], int size);
 //prototype
int main(){
	srand(time(NULL));
	int size=5+rand()%(20-5+1), i, A[SIZE];
	printf("random array\n");
	for(i=0;i<size;i++){
		A[i]=-2+rand()%(2-(-2)+1);
		printf("%d ",A[i]);
	}
	printf("\n");
	printf("the number of non zeros is %d\n", nonZero(A,size));
	return 0;
}
int nonZero(int A[], int size){
	int i, count=0;
	for(i=0;i<size;i++){
		if(A[i]!=0)
			count++;
	}
	return count;
}